Which of the following is true of children in the middle years?

A) They fail to develop the ability to use connectives.
B) They learn to form indirect object-direct object constructions.
C) They have difficulty in understanding passive sentences.
D) They attain the maximum level of vocabulary development.

Connectives

Parts of speech that connect words, phrases, or clauses, enhancing coherence in text.

Indirect Object-Direct Object Constructions

Grammatical structures in sentences where an action is performed by the subject on two objects, with the indirect object typically receiving the direct object.

Passive Sentences

Sentences where the subject is the recipient of the action rather than the doer, often characterized by the use of forms of the verb "to be" followed by a past participle.